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AGGREGATE DEMAND CURVE: A graphical representation of the relation between aggregate expenditures on real production and the price level, holding all ceteris paribus aggregate demand determinants constant. The aggregate demand, or AD, curve is one side of the graphical presentation of the aggregate market. The other side is occupied by the aggregate supply curve (which is actually two curves, the long-run aggregate supply curve and the short-run aggregate supply curve). The negative slope of the aggregate demand curve captures the inverse relation between aggregate expenditures on real production and the price level. This negative slope is attributable to the interest-rate effect, real-balance effect, and net-export effect.
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BARTER: A method of trading goods, commodities, or services, directly for one another without the use of money. In a barter exchange one good is traded directly for another. This sort of exchange ultimately requires a double coincidence of wants, meaning that each trader has what the other trader wants and wants what the other has. Without a double coincidence of wants the exchange process can become exceedingly complex, requiring a great deal of resources to complete transactions, resources that can not be used for production. In fact, inefficient barter trading was the primary reason that money was invented. With money, more resources can be used for production and fewer are needed for trading. See also | good | service | money | exchange | double coincidence of wants | resources | production | market |
Recommended Citation:BARTER, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: June 6, 2026].
AmosWEB Encyclonomic WEB*pedia:Additional information on this term can be found at: WEB*pedia: barter
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MODEL An abstract representation of the real world that is usually based on scientific theories, principles, and hypotheses. A model is used to analyze economic phenomena by focusing on a small number of essential aspects of the real world. It is then manipulated to derive conclusions and implications that can be applied to the real world.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club trying to buy either a flower arrangement for your aunt or a birthday greeting card for your uncle. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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A half gallon milk jug holds about $50 in pennies.
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"I've always believed that if you put in the work, the results will come. I don't do things half-heartedly. Because I know if I do, then I can expect half-hearted results. " -- Michael Jordan, basketball player
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PBOT
Phildelphia Board of Trade
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